Understanding RAID Types: Benefits, Limitations, and Use Cases
School
Phoenix College**We aren't endorsed by this school
Course
BPC 170
Subject
Information Systems
Date
Dec 10, 2024
Pages
2
Uploaded by EarlGalaxy15147
### RAID Implementation Types| **Type** | **Description** | **Advantages** | **Limitations** ||--------------------|-------------------------------------------------------------------------------------------------------|---------------------------------------------|-----------------------------------------|| **Hardware RAID** | Uses a dedicated RAID controller for managing arrays. | Offloads CPU processing, better performance | More expensive || **Software RAID** | Managed by the systemmirrored pairs striped together. | High performance and redundancy | Uses only 50% of capacity; mirrored pair failure = data loss || **Disk Duplexing** | Similar to RAID 1, but uses two RAID controllers for added redundancy. | Eliminates single controller failure risk | More complex setup |---### RAID Fault Tolerance & Hot Spares| **Concept** | **Description** ||--------------------|-----------------------------------------------------------------------------------------------------------------|| **Fault Tolerance** | RAID levels (1, 5, 6, 10) provide fault tolerance, with RAID 6 tolerating two simultaneous failures. || **Hot Spare** | A standby disk that automatically replacesa failed drive in an array, minimizing downtime and maintaining redundancy. |---### Use Cases| **RAID Level** | **Best Use** ||-------------------|--------------------------------------------
---------------------------------------------------------------------|| **RAID 0** | High-speed tasks like video editing where data loss is acceptable. || **RAID 1** | Critical systems needing data redundancy, like backup solutions. || **RAID 5** | General-purpose storage for small to medium-sized businesses. || **RAID 6** | Large-scale storage systems requiring high reliability and fault tolerance. || **RAID 10** | High-performance, high-redundancy applications like databases or web servers. |---### Summary:- **RAID 0**: Best for speed, no redundancy.- **RAID 1**: Simple redundancy, uses 50% of capacity.- **RAID 5/6**: Balanced performance and redundancy, RAID 6 handles two failures.- **RAID 10**: Combines speed and redundancy, but costly in termsof capacity.